[issue30923] Add -Wimplicit-fallthrough=0 to Makefile ?

[Stefan Krah]

Stefan Krah added the comment:


New changeset f432a3234f9f2ee09bd40be03e06bf72865ee375 by Stefan Krah in branch 'master':
bpo-30923: Silence fall-through warnings included in -Wextra since gcc-7.0. (#3157)
https://github.com/python/cpython/commit/f432a3234f9f2ee09bd40be03e06bf72865ee375


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